package ioperations;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOperation{
    public void work(BookList bookList){
        System.out.println("删除图书......");
        Scanner scanner=new Scanner(System.in);
        System.out.println("请输入你要删除的书名");
        String name=scanner.nextLine();
        int currentsize=bookList.getUseSize();
        //找到这本书
        int pos=-1;
        int i=0;
        for(;i<currentsize;i++) {
            Book book = bookList.getBooks(i);
            if (book.getName().equals(name)) {
                System.out.println("找到了这本书：");
               pos=i;
               break;
            }
        }
        if(i==currentsize){
            System.out.println("没有你要删除的书");
            return;
        }
        //这里开始删除
        for(int j=pos;j<currentsize-1;j++){
            Book book=bookList.getBooks(j+1);
            bookList.setBooks(j,book);
        }
        bookList.setBooks(currentsize-1,null);
        bookList.setUseSize(currentsize-1);
        System.out.println("删除成功！！！1");
    }
}
